Three hands-on routines (timer cube, one-box kit, backpack hook) that let you keep a hobby alive during newborn life.
The Timer Cube That Makes a Hobby Easier to Start

With a newborn, the part that breaks you is the feeling that you need a clean hour, a clear counter, and a functioning adult nervous system before you can do anything you care about. A little timer cube (the kind you flip to 5, 10, 20, 30, or 60 minutes) makes starting easier because it turns your hobby into a short session with a clear stopping point.
Here's how it looks at my house: I keep the cube in the same basket as burp cloths and diaper cream. When the baby finally settles in the bassinet, I flip it to 20 minutes and start the smallest version of the hobby. For guitar, that's tuning and running the same progression. For drawing, it's one page in a cheap spiral sketchbook. For a language app, it's one lesson with headphones. The timer matters because I can hear it from the couch even with the white noise machine going, and when it beeps, I stop.
Two practical notes from doing this for months: set up the hobby before the timer starts (pick up the guitar and sit down first), and pick a length you can finish even if you get interrupted once. Twenty minutes is long enough to feel like you did something, and short enough that if you get spit-up on your shirt halfway through, you're not mourning a lost evening.
Build a One-Box Hobby Kit

Newborn days can feel like the same loop: feed, burp, diaper, bounce, repeat. What helped me keep a hobby going was making the hobby easier to pick up. I made a single box that could live in the living room and be opened with one hand while the other hand did the pacifier shuffle.
Pick a lidded container you can operate without a wrestling match. Mine is a small clear bin with a snap lid, about shoebox size, because I wanted to see what was inside when my brain was mush. Then build the kit like you're packing for a flight. You want items that don't require a spill-prone setup, don't stain your couch, and don't demand perfect lighting. If your hobby is sketching: one sketchbook, one mechanical pencil, one eraser, and a clip-on book light that charges by USB-C. If it's knitting or crochet: one ball of yarn, one hook or needle size, a little pouch of stitch markers, and a blunt yarn needle. If it's gaming: the controller in the box, plus a microfiber cloth so you don't keep side-eyeing the sticky thumbstick from midnight snacks.
What doesn't go in the box: anything that needs an elaborate cleanup when a diaper blows out at the exact wrong moment. Wet paint. Solvents. A dozen tiny beads. If you're thinking, "But that's my favorite part," save it for later.
The best part is where the box lives. Put it near the places you already do newborn life: next to the nursing pillow, under the side table by the rocker, on the same shelf as the extra swaddles. When you're nap-trapped, you can pop the lid, do ten minutes, close it, and slide it back without turning your home into a half-finished project you step over for three days.
The Backpack Hook Rule for Leaving the House as Yourself

Staying home with a newborn can make your world shrink to the couch, the changing pad, and the kitchen sink. I had to relearn how to leave the house without it being a full-scale operation. My trick is embarrassingly physical: a sturdy backpack and a hook that lets me hang it anywhere, because having somewhere clean and convenient to hang it makes juggling the baby and my stuff easier. A carabiner-style hook (the kind people clip to a bag to hang it on a table edge) sounds like gear nonsense until you try to juggle a diaper bag, a baby in a carrier, and a coffee you paid too much for.
The rule is simple: the backpack is the hobby bag, and it only gets packed in one way. Front pocket holds one hobby item that fits the outing: a paperback, a small sketch pad, a Kindle, a foldable controller for phone games, a tiny camera if photography is your thing. Inside: diapers, wipes, a changing pad, a spare onesie, and two burp cloths. I don't let it turn into the everything bag. That's how it becomes heavy, and then you "forget" it because your shoulders are already tired.
Now for the part that made this stick: I tie the hobby to the most reliable newborn errand. For me, it's the first walk after the morning feed. I put the baby in a properly fitted carrier, throw the backpack on, and go to the same place every time (a park bench or a coffee shop). If the baby falls asleep, I get 15 minutes with my hobby item. If the baby doesn't, I still got outside as me.
And yes, sometimes you sit down, open the sketch pad, and the baby wakes up immediately like they sensed joy. That's fine. Clip the bag to the bench or table, take the baby out, and bounce. You're still practicing the skill that matters here: making room for something that is yours, even when the schedule keeps changing.